Ventilator



June 22, 1937. H. c. HUEGLIN VENTILATOR Filed July 10, 1936 3 Sheets-Sheet l June 22, 1937. H. c. HUEGLIN 2,034,807

' VENTILATOR Filed Jilly 10, 1936 3 Sheets-Sheet 2 iQgg June 22, 1937. H. c. HUEGLIN 2,034,307

VENTILATOR Filed July 10, 1936 3 Sheets-Sheet 3 Jrk mzdzz 67.2% 222 a MA Patented June 22, 1937 v 2 e a 9 UNITED STATES PATENT OFFICE YENTILATOR Herman C. Hueglin, Chicago, Ill., assignor to Ari-master Corporation, Chicago, 111., a corporation of Illinois Application July 10, 1936, Serial No. 89,901

Claims. (Cl; 98-43) This invention relates to ventilators, and more Other objects and advantages of the invention, particularly s directed to ventilators for window such as its simplified construction and assembly, Opemngs and the hke. will be more apparent from the following detailed Ventilator devices of this general type usually description which, taken in conjunction with the 5 comprise a fan and driving motor, and have been accompanying drawings will disclose to those provided with a mounting bracket for supportskilled in the art the particular construction and ing the motor and fan'in a panel, which panel operation of a preferred form of the present inis adapted for mounting in or over a window, vention.

transom, or equivalent type of opening, In the drawings: 4 l0 it is customary, in such devices, to havea grill Figure 1 is a rear elevational view of a window 1 or screen over the outlet opening to prevent frame with the ventilator mounted in operative entrance of insects or the like, and in some inposition;

stances to deflect or control the direction of the Figure 2 is an enlarged view of the ventilator air from the outlet. panel, with the switch housing cover removed;

'15 The present invention contemplates an im- Figure 3 is a side elevational view with porproved type of ventilator having means for partions broken away, of the ventilator panel; ticularly adapting it for mounting in window Figure 4 is a corresponding view with the openingspespecially in casement or so-called -1ouvres in open position; and French windows, and where the window frame Figure 5 is a sectional view through the ven- 1 is metallic, although it is readily capable of use tilator fan. 20 in other types of ventilating openings. Referring now in detail to the drawings, in

One feature of the present invention is the Figure 1 I have disclosed a window frame indiprovision of a panel structure adapted for mountcated generally at 5, having the vertically hinged ing in a suitable opening and having hinged venwindow portions 6 and I, which may be of the tllating louvres connected together for conjoint door or casement type, hinged at their opposite 25 opening and closing movement, the actuatingvertical edges as indicated at 8. Disposed above means for operating the louvres simultaneously the top of the windows 6 and 1 is a ventilator controlling operation of the .fan. opening comprising the frame 9, to which is Another advantage possessed by the present insecured the panel In carrying the ventilating vention is the provision of an enclosed control equipment. The panel lil may be formed of 30 housing containing the switch mechanism for steel, or of any other equivalent material, and the fan motor and also the operating linkage preferably is provided with a plurality of atfor the louvres, the housing being disposed on taching lugs 12 having laterally offset clamping the inside face of the panel adjacent the motor portions, m t d at the corners r f, and

mounting bracket. having extending oifset clamping portions adapt- 35 Still another object of the present invention ed to form with the panel clamping grooves for is to provide a construction wherein the fan moreceiving the defining edges of the frame 9 for tor control switch and the louvres are normally securing the panel in fixed position within the urged toward inoperative position, and the means frame.

40 for actuating the switch and louvres must be The panel 0 s provided With a circular open- 40 maintained in operative position at all times that ing indicated at l3, about which is mounted a operation is desired. Thus if the actuating means supporting bracket having the ring shaped flange is accidentally displaced, the motor switch will I4 secured by any suitable securing means such automatically be deenergized and the louvres as thebolts Hi to the rear base of the panel.

will simultaneously close. Formed integral with the bracket I4 is a rear- 45 The present invention also provides means wardly extending arm portion l6, which is prowhereby the panel may be readily mounted in vided with an intermediate arcuate portion I! position in an opening and dismounted thereadapted to receive and support the frame [8 of a from, without any special tools or any special motor indicated generally at l9. The motor I9 fittings in the opening. is of any desired type of electrical motor, and 50 Still another object of the present invention has secured to the shaft thereof the fan 20, the is the provision of a fan construction of simple fan being of a diameter such as to have free roand economical design, capable of formation tation within the opening l3. The fan itself is from sheet metal stampings, and adapted to be preferably disposed in the plane of the ring assembled in proper manner with facility. shaped portion M of the bracket, while the motor 55 is disposed rearwardly thereof upon the arm it. The current supply for the motor is lead thereto through the cable 22, which extends through a suitable opening 23 in the arm id of the bracket, and thence is lead to the terminal connections or the motor.

Mounted at one side of the bracket i4 is a control housing 24, which housing encloses the actuating means for the motor and also for the louvres. This housing may be of light weight sheet metal construction, with suitably formed defining walls carrying flanges which may be folded together in any suitable manner to form an enclosing substantially dust proof housing. Preferably the side walls are provided with inturned flange portions 25, which form suitable supporting surfaces to which a cover plate 26, as shown in Figure 1, may be secured by the screws 21.

Within the housingmi there is provided a journal member 28, which is bolted by means oi. the bolts 29 to the rear face of the housing parallel to the plane of the panel l8. Cooperating with the journal member 28 is a second journaling member (iii, secured thereto by means of the screws 32, which forms a substantially cylindrical journal receiving the intermediate portion of a crank arm 34 which has one end portion projecting outwardly through a side wall of the housing and having a normally extending crank portion 35 terminating in a threaded stud portion 35 which is adapted to receive the operating rod 15 secured thereto by means of the nuts 35. The opposite end of the arm 35 is provided with a second crank portion 39 which extends in an angularly offset position with respect to the crank portion 35, and which has a normally extending terminal portion adapted to receive the member 52 which extends substantially vertically within the housing 24, and which at its upper end is provided with securing means 43 securing a normally extending flange 4c of the upper louvre 45 thereto, as indicated clearly'in Figure 4, while intermediate its end it is provided with a second securing means 46 for securing the inturned fiange 41 of the second louvre 48 thereto. Intermediate the securing means 43 and 46 the member 42 has clamped thereto by means of thebolts 49, a switch actuating arm-55 having a normally extending portion adapted. toengage a switch control plunger 52 of a switch mounted within the switch housing 53 disposed at the upper end of the housing 24 and secured thereto by means of the brackets 54 carried by the housing.

The switch plunger 52 is normally urged to a position projecting outwardly of the housing 53, and in its outermost projecting position eifects closure of the switch controlling the operation of the motor l9. When the member 42 is in the holds the plunger 52 in retracted position, maintaining the circuit through the switch'open and.

resulting in no energization of the motor I9. Suitable terminals 55 and 56 on the face of the switch housing 53 have connection through respective conductors 51 and 58, the conductor 58* 2,oe4,eo7

55 and 55, to complete the circuit through the fan motor l9.

The housing 24 is provided with a suitable bushing 52 in the side wall thereof, which forms a suitable inlet for the supply cable 65, and at its lower end is provided with a second bushing 63 providing a suitable inlet for the cable carrying the current supply to the motor l9. side wall carries a projecting pin 54 rigidly secured thereto, and disposed substantially in horizontal alignment with the portion 36 of the crank arm 34 when the arm is in inoperative position, as shown in Figures 2 and 3.

Considering now in detail the mounting of the louvres 45 and 48, each of these louvres extends substantially across the panel II), the panel being provided with outwardlyextending side flanges and provided at its top with a downwardly slanting flange 52' which closes the top of the I opening in which the louvres are disposed. The

louvres are each provided with rolled portions 53' at their upper end, these portions being rolled about horizontally extending shafts 54' and respectively, journaled in the side flanges 50'. Each of the louvres is provided along its lower edge with an arcuate outwardly curved portion 56', the upper louvre 45 being of a vertical extent such that the portion 56' encloses the lower portion 53' and they shaft 55' of the lower louvre 48 when the louvres are in closed position, as shown in Figure 3. The rearwardly extending wings 44 and 41 of the louvres can {be formed integralv vided a spring member 10, which at one end is secured by means of a bracket l2 to the top wall of the housing 24, and at its lower end is secured as indicated at 13 to the lower outwardly curved end of the member 42, the member. 52 being pivoted in any suitable manner to the extending end 50 of the arm 39 of the crank 34.

In the operation of the construction thus far disclosed, a suitable operating rod 15, having an opening adjacent one end thereof, indicated at 16 in Figure 2, is secured to the portion 36 of the arm 35, and is pivotally mounted thereon.- librtending upwardly from the opening which rerod 15 is provided with a slotted portion 11, shown in Figures 3 and 4, so that when the rod 151s pulled downwardlyto' rotate the crank arm 35 in a counterclockwise direction, the radius. of this arm in turn serves to move the rod outwardly away from the panel.- The notched portion 11 is moved downwardly into a position such that it engages the pin 64, thereby holding the arm 35 in its actuated position. Rotation of the crank 35 results in corresponding rotation of the opposite crank portion 39 of the arm 34, resulting in downward movement of the member 42. This results in a corresponding downward thrust on the flanges 41 and 44 of the -louvres, pivoting the louvres about their corresponding shafts 54' and 55', to open the same to the position shown in Figure 4. At the same time, the switch controlling arm 50 is moved away from the plunger 52, allowing the plunger to move outwardly to actuate the switch within the housing 53. Thus,

downward movement of the actuating rod 15 simultaneously opens the louvres 45 and 48, and results in energization of the switch to energize the fan motor l9.

Also, the

As long as the rod is retained in its operative locking position and retains its notched portion Tl engaged with the pin, the louvres remain open and the fan operates. However, upon dislocation of the rod '55 from its abutting engagement with the pin 64, the weight of the louvres 45 and 48, together with the effect of the spring 10, result in upward movement of the arm 35 in as the rod is retained in actuated position by engagement of the notch H with the pin 64.

Considering the particular fan employed in this invention in detail, the fan comprises a pair of crossed'fan blades Bil and 85, as shown in Figure 5. Each of these blades is of substantially uniform pitch and curvature adjacent the outer extremities thereof, and merges into bucketshaped portions 82 adjacent its central portion. These bucket-shaped portions are connected together by a substantially planar central portion 83, having upstruck ridges 86 formed therein, the ridges at being seated in corresponding ridges b5 formed in the other of the fan blades 86. A hub or collar 81 is provided, which is adapted to be secured to the shaft of the motor. is, and

which is provided with a reduced portion 8% extending through the central portions of the blades 8i! and 85. The outer end of the reduced portion 88 is then crimped or spun over, as indicated at 99, to secure the members 86 and in fixed crossed position on the collar 8?. The collar may be nonrotatably secured to the shaft of the motor in any desired manner, as by a set screw or the like.

With this particular type of fan construction, the fan blades can be made of metal stampings, and can be readily and economically formed. By reason of the particular aligning grooves, whereby the corresponding portions of the blades can be fixed in the proper alignment, a positive fixed assembly can be provided at a minimum of cost, and with a minimum amount of detailed assembly work.

It is therefore believed that I have provided a ventilator construction having certain improved features of design and operation which render the same capable of producing improved operating characteristics. The provision of a ventilator of this type in which the panel can be secured directly in a transom opening or the like, and in which the actuation of the motor and the control of the ventilating louvres is conjointly accomplished by a single operating member, is believed of distinct importance; Also, the particular fan construction is believed to be advantageous for use with a simplified ventilator construction of this type.

I unaware that various changes in the con struction and design of the constituent parts of the present invention are possible, and I therefore intend to be limited only as defined by the scope and spirit of the appended claims.

I claim:

1. In combination, a supporting panel having an opening therethrough, a fan mounted substantially centrally in said opening and having a fixed support on said panel, a plurality of louvres hinged at corresponding edges to said panel and connected together for conjoint swinging movement, and means for simultaneously swinging said louvres outwardly of said panel and energizing said fan, comprising a pivoted crank on said panel, a spring normally holding said crank in louvre closed position, a lever pivoted intermediate its ends on said crank and movable longitudinally for, opening said louvres, and stop means on said panel engaged by one-end of said lever in louvre-open position for holding the crank in actuated position against the action of said spring, said lever being rotatable about said crank for disengagement from said stop means.

2. Control means for a ventilator having a fan motor and a plurality of hinged louvres, comprising a motor switch, a control member having meansconnecting said louvres for conjoint movement and having means for controlling operation of said switch, a crank arm pivotally con- .nected to one end of said control member, a lever pivotally. mounted on one end of said crank and movable longitudinally for rotating said crank arm to open said louvres and simultaneously produce closing of said switch, a projecting pin engaged by one end of said lever for locking said lever in actuated position, said lever being dis-- engaged from salidpin by rotation about said crank arm, andspring means for restoring said crank arm to louvre-closed position upon disengagement of said lever.

3. In combination with a ventilator having a fan motor and a plurality of louvres normally closing the outlet of the fan controlled by said motor, control means 'forsimultaneouslyenergizing said motor and opening said louvres. a lever movable longitudinally for actuating said control means, stop means engageable by one end of said lever for retaining said lever in actuating position, and means for restoring said control means to inoperative position upon rotation of said lever about said control means out of engagement with said stop means.

'4. In combination with a ventilator having a fan motor, a switch therefor, and a plurality of overlapping hinged louvres normally closing the outlet of the fan controlled by said motor, of a link connecting said louvres for conjoint swinging movement and including switch operating means, a pivoted crank having annularly oflset oppositely extending arms, said link being pivoted to one of said arms, an operating lever pivoted intermediate its ends to the other of said arms and movable longitudinally to rotate said crank for opening said louvres and simultaneously actuating said fan motor switch, and a proiectingstop member engageable by one end of said lever for holding the same in actuated position, said lever being disengaged from said stop means by rotation thereof about said crank arm pivot.

5. The combination set forth in claim 4 characterized further by spring means engaging said link for restoring said link to louvre-closed position upon disengagement of said lever from said stop means.

HERMAN c. HUEGLIN. 

